Hi Today we make a Program How To **Find the Factorial of a Number using while loop in C++** .Now We Start it.

**What is Factorial of a Number:**

The factorial of a Number n, denoted by n!, is the product of all positive integers less than or equal to n.

** Find the Factorial of a Number using while loop in C++**

```
#include<iostream>
#include<conio.h>
using namespace std;
main()
{
int x;
cout<<"Enter the value for which you want the factorial:";
cin>>x;
int f=1;
int n=1;
while(n<=x)
{
f=f*n;
n=n+1;
}
cout<<"This is the required value:"<<f<<endl;
getch();
}
```

**Output of Program**

Enter a positive integer: 4 Factorial of 4 = 24